diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/protocol/match/MatchField.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/protocol/match/MatchField.java
index bfe92a4..a502836 100644
--- a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/protocol/match/MatchField.java
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/protocol/match/MatchField.java
@@ -68,7 +68,7 @@
                     new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.IPv4, EthType.IPv6));
 
     public final static MatchField<IpEcn> IP_ECN =
-            new MatchField<IpEcn>("ip_dscp", MatchFields.IP_ECN,
+            new MatchField<IpEcn>("ip_ecn", MatchFields.IP_ECN,
                     new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.IPv4, EthType.IPv6));
 
     public final static MatchField<IpProtocol> IP_PROTO =